Which of the four abdominal muscles listed below do all of the other three muscles insert on?
A) transverse abdominis
B) internal oblique
C) rectus abdominis
D) external oblique
C
Explanation:
A) The transverse abdominis is deep to the internal oblique and forms the deepest layer of the abdominal wall.
B) The internal oblique lies deep to the external oblique and is the second of the three lateral layers of the abdominal wall.
C) The rectus abdominis is the abdominal muscle on which the external oblique, internal oblique, and transverse abdominis all insert. It is a long, ribbon-like muscle in the midline of the ventral surface of the abdomen.
D) The external oblique is the most superficial of the lateral abdominal muscles.
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Answer the following statements true (T) or false (F)
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